Sorry I bump this post as its already old-ish and discussed allot.
And reading all of stefan's replies where the option for anyone with the link being able to permanently delete or edit the the references were discussed. This by it self is not a bad feature I can imagine many possibility where this is very useful. However this is in no way always useful. It would be wonderful if there would be a possibility to only allow people to edit them or maybe just suggest changes, or at least be able to undo any changes that are done by others, since this could help fixing mistakes. Or maybe just put it behind a password, or have it manageable who can and who can't edit.
Maybe I'm just dumb and there's already such a feature but for now I've only found the export clean copy feature.
This 1 issue of not being able to just block others out is enough reason for me never buy Paperpile or even continue using it. Wich is very unfortunate because up until now I liked it.
I understand its a "core feature" but in my unimportant opinion this feature is flawed from the core.